Stop motion for twisting machines



March 22,. 1932. M7 HYDE 1,850,207

STOP MOTION FOR TWISTING MACHINES Filed May '1. 1931 Patented Mar. 22,1932:

UNITED STATES HAROLD L. HYDE, OF PAWTUCKET, RHODE ISLAND STOP MOTION FORTWISTING MACHINES Application filed May 1, 1931. Serial No. 534,390.

This invention relates to a stop motion for twisting machines, thegeneral object of the invention being to provide means for stopping therotary movement of one spool when the threads on another spool break,thereby preventing the spinning of thin thread on a machine which twiststwo threads together.

Another object of the invention is to provide means whereby the twospools may be readily placed on a spindle.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts to behereinafter fully described, illustrated in the accompanying drawingsand specifically pointed out in the appended claims.

In describing the invention in detail, reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Figure 1 is an elevation of the invention.

Figure 2 is a vertical sectional viewthrough Figure 1 showing one of thespools and the thread thereon in end elevation.

Figure 3 is a detail sectional view through the bracket and the cheesewith the spools and spindles in elevation.

Figure 1 is an end view showing how the pivoted arm on the end of thebracket can be swung upwardly in order to remove the spindle or replaceit.

In these views, the numeral 1 indicates a part of the supporting framewhich has a bearing 2 at one end thereof and an arm 3 is pivoted to theother end as shown at 4,;this arm having a notch 5 therein for receivingthe other end of the spindle which is shown at 6. Thus, by lifting thespindle to free its ends from the notch 5 and then swinging the arms 3to the dotted line position shown in Figure 4, the spindle with thespools thereon can be removed or replaced. 7

A spring 7 on the top of the frame 1 holds the arms 2 in either one ofthe two positions. The spools are shown at 8 and each spool carries acheese 9 and the threads I pass through or over the guides 10 which arecarried by the curved arms 11 attached to the top of the frame.

A'bracket 12 is attached to the spindle between the spools by a setscrew 13 and said bracket is formed with a forwardly extending arm 13having the bearing holes therein for the straight parts 14 of the rods15, each of which extend in front of a cheese and has. its outer partbent into substantially the shape of an inverted U, the bight of whichis pierced by the thread as shown in Figures 1 and 2, thus the threadshold the rod in the 60 full line position shown in Figure -1, but if thethread should break, the rod will turn in the bearing hole in the arm 13and in some parts will drop intothe dotted line position shown in Figure1.

The rear end of each rod is formed with a crank 16 for engaging a kerf17 in the inner end of the opposite spool. From the foregoing, it willbe seen that should one of the threads break, the part 15 of the rodwhich engages said thread will drop, the parts 14 of said rod turning inthe bearing. hole in the arm 13 and this downward movement willcause thecrank 16 to engage the kerf 17 of the other spool and thus the turningmovement of said spool and the shoes thereon willstop and thus thespinning action between the two threads will cease and there is nodanger of continuing the spinning action with but the one thread.

After the ends of the broken thread are connected together, the rod isreturned to its normal position so that the stopping device is then setand the spinning action is continued.

It is thought from the foregoing description that the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts provided thatsuch changes fall within the scope of the appended claims.

Iclaim:

1. A stop motion for a twisting machine having a pair of spools thethreads of which are to be twisted together, a spindle on which thespools are placed, a bracket on the spindle between the spools, a pairof members each journalled in the bracket and having an outer partextending in front of a spool and un- :der which the thread from thespool passes,

and a part on said member for engaging the opposite spool when themember drops on the breaking of the thread of the first spool.

2. A stop motion for a twisting machine having a pair of spools thethreads of which are to be twisted together, a spindle on which thespools are placed, a bracket on the spindle between the spools, a pairof members each journalled in the bracket and having an outer partextending in front of a spool and under which the thread from the spoolpasses, and a part on said member for engaging the opposite spool whenthe member drops on the breaking of the thread of the first spool, theinner end of each spool having a kerf therein and each member havingacrank end for engagement with the kerf when said member drops on thebreaking of a thread.

3. In a thread twisting machine, a frame having a bearing in one partthereof, a pivoted arm depending from another part and having a notchtherein, a spindle having one end fitting in the bearing and its otherend in the notch, a pair of spools on the spindle, a cheese on eachspool, the inner ends of the spools having recesses therein, a bracketfastened to the spindle between the spools and having a pair of bearingopenings therein, a rod having a straight part rotatably arranged ineach: opening with the outer part of the rod bent and extending in frontof each cheese, this part of each rod being of substantially invertedU-shape with the thread passing under the bight thereof, the rear end ofeach straight part of each rod being bent into crank shape for engagingthe recess in the opposite spool when the front part of the rod drops onthe breaking of the thread of the other spool.

In testimony whereof I aflix my signature.

HAROLD L. HYDE.

